Mesa (master): pan/midgard: Identify clamp(x, -1.0, 1.0) flag

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Module: Mesa
Branch: master
Commit: cc3d29c6e7ccca1ac738cfeafbe4685fbec533f7
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=cc3d29c6e7ccca1ac738cfeafbe4685fbec533f7

Author: Alyssa Rosenzweig <alyssa.rosenzweig at collabora.com>
Date:   Thu Feb 20 07:41:26 2020 -0500

pan/midgard: Identify clamp(x, -1.0, 1.0) flag

So *that's* what's .unk2 was about :)

We still need to add an opt pass for it, but we can do that further down
the line.

Signed-off-by: Alyssa Rosenzweig <alyssa.rosenzweig at collabora.com>
Tested-by: Marge Bot <https://gitlab.freedesktop.org/mesa/mesa/merge_requests/3892>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/merge_requests/3892>

---

 src/panfrost/midgard/disassemble.c | 2 +-
 src/panfrost/midgard/midgard.h     | 6 +++---
 2 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/src/panfrost/midgard/disassemble.c b/src/panfrost/midgard/disassemble.c
index 2634959bc6d..93e11667749 100644
--- a/src/panfrost/midgard/disassemble.c
+++ b/src/panfrost/midgard/disassemble.c
@@ -140,7 +140,7 @@ print_reg(FILE *fp, unsigned reg, unsigned bits)
 static char *outmod_names_float[4] = {
         "",
         ".pos",
-        ".unk2",
+        ".one",
         ".sat"
 };
 
diff --git a/src/panfrost/midgard/midgard.h b/src/panfrost/midgard/midgard.h
index 0e650db74e8..b270fd2a823 100644
--- a/src/panfrost/midgard/midgard.h
+++ b/src/panfrost/midgard/midgard.h
@@ -207,9 +207,9 @@ typedef enum {
 
 typedef enum {
         midgard_outmod_none = 0,
-        midgard_outmod_pos  = 1,
-        /* 0x2 unknown */
-        midgard_outmod_sat  = 3
+        midgard_outmod_pos  = 1, /* max(x, 0.0) */
+        midgard_outmod_one  = 2, /* clamp(x, -1.0, 1.0) */
+        midgard_outmod_sat  = 3 /* clamp(x, 0.0, 1.0) */
 } midgard_outmod_float;
 
 typedef enum {